android_kernel_xiaomi_sm8350/net/mac80211/cfg.c

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/*
* mac80211 configuration hooks for cfg80211
*
* Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
*
* This file is GPLv2 as found in COPYING.
*/
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
[NET]: Make the device list and device lookups per namespace. This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-17 14:56:21 -04:00
#include <net/net_namespace.h>
#include <linux/rcupdate.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "cfg.h"
#include "rate.h"
#include "mesh.h"
static enum ieee80211_if_types
nl80211_type_to_mac80211_type(enum nl80211_iftype type)
{
switch (type) {
case NL80211_IFTYPE_UNSPECIFIED:
return IEEE80211_IF_TYPE_STA;
case NL80211_IFTYPE_ADHOC:
return IEEE80211_IF_TYPE_IBSS;
case NL80211_IFTYPE_STATION:
return IEEE80211_IF_TYPE_STA;
case NL80211_IFTYPE_MONITOR:
return IEEE80211_IF_TYPE_MNTR;
#ifdef CONFIG_MAC80211_MESH
case NL80211_IFTYPE_MESH_POINT:
return IEEE80211_IF_TYPE_MESH_POINT;
#endif
case NL80211_IFTYPE_WDS:
return IEEE80211_IF_TYPE_WDS;
default:
return IEEE80211_IF_TYPE_INVALID;
}
}
static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
enum ieee80211_if_types itype;
struct net_device *dev;
struct ieee80211_sub_if_data *sdata;
int err;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
itype = nl80211_type_to_mac80211_type(type);
if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
return err;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata->u.mntr_flags = *flags;
return 0;
}
static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
char *name;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
/* we're under RTNL */
dev = __dev_get_by_index(&init_net, ifindex);
if (!dev)
return 0;
name = dev->name;
return ieee80211_if_remove(local->mdev, name, -1);
}
static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
enum ieee80211_if_types itype;
struct ieee80211_sub_if_data *sdata;
if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
return -ENODEV;
/* we're under RTNL */
dev = __dev_get_by_index(&init_net, ifindex);
if (!dev)
return -ENODEV;
if (netif_running(dev))
return -EBUSY;
itype = nl80211_type_to_mac80211_type(type);
if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
return -EOPNOTSUPP;
ieee80211_if_reinit(dev);
ieee80211_if_set_type(dev, itype);
if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
params->mesh_id_len,
params->mesh_id);
if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
return 0;
sdata->u.mntr_flags = *flags;
return 0;
}
static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, u8 *mac_addr,
struct key_params *params)
{
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta = NULL;
enum ieee80211_key_alg alg;
struct ieee80211_key *key;
int err;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (params->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
alg = ALG_WEP;
break;
case WLAN_CIPHER_SUITE_TKIP:
alg = ALG_TKIP;
break;
case WLAN_CIPHER_SUITE_CCMP:
alg = ALG_CCMP;
break;
default:
return -EINVAL;
}
key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
if (!key)
return -ENOMEM;
rcu_read_lock();
if (mac_addr) {
sta = sta_info_get(sdata->local, mac_addr);
if (!sta) {
ieee80211_key_free(key);
err = -ENOENT;
goto out_unlock;
}
}
ieee80211_key_link(key, sdata, sta);
err = 0;
out_unlock:
rcu_read_unlock();
return err;
}
static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, u8 *mac_addr)
{
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
int ret;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
rcu_read_lock();
if (mac_addr) {
ret = -ENOENT;
sta = sta_info_get(sdata->local, mac_addr);
if (!sta)
goto out_unlock;
if (sta->key) {
ieee80211_key_free(sta->key);
WARN_ON(sta->key);
ret = 0;
}
goto out_unlock;
}
if (!sdata->keys[key_idx]) {
ret = -ENOENT;
goto out_unlock;
}
ieee80211_key_free(sdata->keys[key_idx]);
WARN_ON(sdata->keys[key_idx]);
ret = 0;
out_unlock:
rcu_read_unlock();
return ret;
}
static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, u8 *mac_addr, void *cookie,
void (*callback)(void *cookie,
struct key_params *params))
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta = NULL;
u8 seq[6] = {0};
struct key_params params;
struct ieee80211_key *key;
u32 iv32;
u16 iv16;
int err = -ENOENT;
rcu_read_lock();
if (mac_addr) {
sta = sta_info_get(sdata->local, mac_addr);
if (!sta)
goto out;
key = sta->key;
} else
key = sdata->keys[key_idx];
if (!key)
goto out;
memset(&params, 0, sizeof(params));
switch (key->conf.alg) {
case ALG_TKIP:
params.cipher = WLAN_CIPHER_SUITE_TKIP;
iv32 = key->u.tkip.tx.iv32;
iv16 = key->u.tkip.tx.iv16;
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
sdata->local->ops->get_tkip_seq)
sdata->local->ops->get_tkip_seq(
local_to_hw(sdata->local),
key->conf.hw_key_idx,
&iv32, &iv16);
seq[0] = iv16 & 0xff;
seq[1] = (iv16 >> 8) & 0xff;
seq[2] = iv32 & 0xff;
seq[3] = (iv32 >> 8) & 0xff;
seq[4] = (iv32 >> 16) & 0xff;
seq[5] = (iv32 >> 24) & 0xff;
params.seq = seq;
params.seq_len = 6;
break;
case ALG_CCMP:
params.cipher = WLAN_CIPHER_SUITE_CCMP;
seq[0] = key->u.ccmp.tx_pn[5];
seq[1] = key->u.ccmp.tx_pn[4];
seq[2] = key->u.ccmp.tx_pn[3];
seq[3] = key->u.ccmp.tx_pn[2];
seq[4] = key->u.ccmp.tx_pn[1];
seq[5] = key->u.ccmp.tx_pn[0];
params.seq = seq;
params.seq_len = 6;
break;
case ALG_WEP:
if (key->conf.keylen == 5)
params.cipher = WLAN_CIPHER_SUITE_WEP40;
else
params.cipher = WLAN_CIPHER_SUITE_WEP104;
break;
}
params.key = key->conf.key;
params.key_len = key->conf.keylen;
callback(cookie, &params);
err = 0;
out:
rcu_read_unlock();
return err;
}
static int ieee80211_config_default_key(struct wiphy *wiphy,
struct net_device *dev,
u8 key_idx)
{
struct ieee80211_sub_if_data *sdata;
rcu_read_lock();
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ieee80211_set_default_key(sdata, key_idx);
rcu_read_unlock();
return 0;
}
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
sinfo->filled = STATION_INFO_INACTIVE_TIME |
STATION_INFO_RX_BYTES |
STATION_INFO_TX_BYTES;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
sinfo->rx_bytes = sta->rx_bytes;
sinfo->tx_bytes = sta->tx_bytes;
if (ieee80211_vif_is_mesh(&sdata->vif)) {
#ifdef CONFIG_MAC80211_MESH
sinfo->filled |= STATION_INFO_LLID |
STATION_INFO_PLID |
STATION_INFO_PLINK_STATE;
sinfo->llid = le16_to_cpu(sta->llid);
sinfo->plid = le16_to_cpu(sta->plid);
sinfo->plink_state = sta->plink_state;
#endif
}
}
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *mac, struct station_info *sinfo)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
int ret = -ENOENT;
rcu_read_lock();
sta = sta_info_get_by_idx(local, idx, dev);
if (sta) {
ret = 0;
memcpy(mac, sta->addr, ETH_ALEN);
sta_set_sinfo(sta, sinfo);
}
rcu_read_unlock();
return ret;
}
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_info *sinfo)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
int ret = -ENOENT;
rcu_read_lock();
/* XXX: verify sta->dev == dev */
sta = sta_info_get(local, mac);
if (sta) {
ret = 0;
sta_set_sinfo(sta, sinfo);
}
rcu_read_unlock();
return ret;
}
/*
* This handles both adding a beacon and setting new beacon info
*/
static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
struct beacon_parameters *params)
{
struct beacon_data *new, *old;
int new_head_len, new_tail_len;
int size;
int err = -EINVAL;
old = sdata->u.ap.beacon;
/* head must not be zero-length */
if (params->head && !params->head_len)
return -EINVAL;
/*
* This is a kludge. beacon interval should really be part
* of the beacon information.
*/
if (params->interval) {
sdata->local->hw.conf.beacon_int = params->interval;
if (ieee80211_hw_config(sdata->local))
return -EINVAL;
/*
* We updated some parameter so if below bails out
* it's not an error.
*/
err = 0;
}
/* Need to have a beacon head if we don't have one yet */
if (!params->head && !old)
return err;
/* sorry, no way to start beaconing without dtim period */
if (!params->dtim_period && !old)
return err;
/* new or old head? */
if (params->head)
new_head_len = params->head_len;
else
new_head_len = old->head_len;
/* new or old tail? */
if (params->tail || !old)
/* params->tail_len will be zero for !params->tail */
new_tail_len = params->tail_len;
else
new_tail_len = old->tail_len;
size = sizeof(*new) + new_head_len + new_tail_len;
new = kzalloc(size, GFP_KERNEL);
if (!new)
return -ENOMEM;
/* start filling the new info now */
/* new or old dtim period? */
if (params->dtim_period)
new->dtim_period = params->dtim_period;
else
new->dtim_period = old->dtim_period;
/*
* pointers go into the block we allocated,
* memory is | beacon_data | head | tail |
*/
new->head = ((u8 *) new) + sizeof(*new);
new->tail = new->head + new_head_len;
new->head_len = new_head_len;
new->tail_len = new_tail_len;
/* copy in head */
if (params->head)
memcpy(new->head, params->head, new_head_len);
else
memcpy(new->head, old->head, new_head_len);
/* copy in optional tail */
if (params->tail)
memcpy(new->tail, params->tail, new_tail_len);
else
if (old)
memcpy(new->tail, old->tail, new_tail_len);
rcu_assign_pointer(sdata->u.ap.beacon, new);
synchronize_rcu();
kfree(old);
return ieee80211_if_config_beacon(sdata->dev);
}
static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct beacon_data *old;
if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
return -EINVAL;
old = sdata->u.ap.beacon;
if (old)
return -EALREADY;
return ieee80211_config_beacon(sdata, params);
}
static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct beacon_data *old;
if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
return -EINVAL;
old = sdata->u.ap.beacon;
if (!old)
return -ENOENT;
return ieee80211_config_beacon(sdata, params);
}
static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct beacon_data *old;
if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
return -EINVAL;
old = sdata->u.ap.beacon;
if (!old)
return -ENOENT;
rcu_assign_pointer(sdata->u.ap.beacon, NULL);
synchronize_rcu();
kfree(old);
return ieee80211_if_config_beacon(dev);
}
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
struct iapp_layer2_update {
u8 da[ETH_ALEN]; /* broadcast */
u8 sa[ETH_ALEN]; /* STA addr */
__be16 len; /* 6 */
u8 dsap; /* 0 */
u8 ssap; /* 0 */
u8 control;
u8 xid_info[3];
} __attribute__ ((packed));
static void ieee80211_send_layer2_update(struct sta_info *sta)
{
struct iapp_layer2_update *msg;
struct sk_buff *skb;
/* Send Level 2 Update Frame to update forwarding tables in layer 2
* bridge devices */
skb = dev_alloc_skb(sizeof(*msg));
if (!skb)
return;
msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
* Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
memset(msg->da, 0xff, ETH_ALEN);
memcpy(msg->sa, sta->addr, ETH_ALEN);
msg->len = htons(6);
msg->dsap = 0;
msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
msg->control = 0xaf; /* XID response lsb.1111F101.
* F=0 (no poll command; unsolicited frame) */
msg->xid_info[0] = 0x81; /* XID format identifier */
msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
skb->dev = sta->sdata->dev;
skb->protocol = eth_type_trans(skb, sta->sdata->dev);
memset(skb->cb, 0, sizeof(skb->cb));
netif_rx(skb);
}
static void sta_apply_parameters(struct ieee80211_local *local,
struct sta_info *sta,
struct station_parameters *params)
{
u32 rates;
int i, j;
struct ieee80211_supported_band *sband;
struct ieee80211_sub_if_data *sdata = sta->sdata;
/*
* FIXME: updating the flags is racy when this function is
* called from ieee80211_change_station(), this will
* be resolved in a future patch.
*/
if (params->station_flags & STATION_FLAG_CHANGED) {
spin_lock_bh(&sta->lock);
sta->flags &= ~WLAN_STA_AUTHORIZED;
if (params->station_flags & STATION_FLAG_AUTHORIZED)
sta->flags |= WLAN_STA_AUTHORIZED;
sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
sta->flags |= WLAN_STA_SHORT_PREAMBLE;
sta->flags &= ~WLAN_STA_WME;
if (params->station_flags & STATION_FLAG_WME)
sta->flags |= WLAN_STA_WME;
spin_unlock_bh(&sta->lock);
}
/*
* FIXME: updating the following information is racy when this
* function is called from ieee80211_change_station().
* However, all this information should be static so
* maybe we should just reject attemps to change it.
*/
if (params->aid) {
sta->aid = params->aid;
if (sta->aid > IEEE80211_MAX_AID)
sta->aid = 0; /* XXX: should this be an error? */
}
if (params->listen_interval >= 0)
sta->listen_interval = params->listen_interval;
if (params->supported_rates) {
rates = 0;
sband = local->hw.wiphy->bands[local->oper_channel->band];
for (i = 0; i < params->supported_rates_len; i++) {
int rate = (params->supported_rates[i] & 0x7f) * 5;
for (j = 0; j < sband->n_bitrates; j++) {
if (sband->bitrates[j].bitrate == rate)
rates |= BIT(j);
}
}
sta->supp_rates[local->oper_channel->band] = rates;
}
if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
switch (params->plink_action) {
case PLINK_ACTION_OPEN:
mesh_plink_open(sta);
break;
case PLINK_ACTION_BLOCK:
mesh_plink_block(sta);
break;
}
}
}
static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_parameters *params)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata;
int err;
/* Prevent a race with changing the rate control algorithm */
if (!netif_running(dev))
return -ENETDOWN;
if (params->vlan) {
sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
sdata->vif.type != IEEE80211_IF_TYPE_AP)
return -EINVAL;
} else
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (compare_ether_addr(mac, dev->dev_addr) == 0)
return -EINVAL;
if (is_multicast_ether_addr(mac))
return -EINVAL;
sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
if (!sta)
return -ENOMEM;
sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
sta_apply_parameters(local, sta, params);
rate_control_rate_init(sta, local);
rcu_read_lock();
err = sta_info_insert(sta);
if (err) {
/* STA has been freed */
rcu_read_unlock();
return err;
}
if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
sdata->vif.type == IEEE80211_IF_TYPE_AP)
ieee80211_send_layer2_update(sta);
rcu_read_unlock();
return 0;
}
static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
if (mac) {
rcu_read_lock();
/* XXX: get sta belonging to dev */
sta = sta_info_get(local, mac);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
sta_info_unlink(&sta);
rcu_read_unlock();
sta_info_destroy(sta);
} else
sta_info_flush(local, sdata);
return 0;
}
static int ieee80211_change_station(struct wiphy *wiphy,
struct net_device *dev,
u8 *mac,
struct station_parameters *params)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta;
struct ieee80211_sub_if_data *vlansdata;
rcu_read_lock();
/* XXX: get sta belonging to dev */
sta = sta_info_get(local, mac);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
if (params->vlan && params->vlan != sta->sdata->dev) {
vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN &&
vlansdata->vif.type != IEEE80211_IF_TYPE_AP) {
rcu_read_unlock();
return -EINVAL;
}
sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
ieee80211_send_layer2_update(sta);
}
sta_apply_parameters(local, sta, params);
rcu_read_unlock();
return 0;
}
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct mesh_path *mpath;
struct sta_info *sta;
int err;
if (!netif_running(dev))
return -ENETDOWN;
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
return -ENOTSUPP;
rcu_read_lock();
sta = sta_info_get(local, next_hop);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
err = mesh_path_add(dst, dev);
if (err) {
rcu_read_unlock();
return err;
}
mpath = mesh_path_lookup(dst, dev);
if (!mpath) {
rcu_read_unlock();
return -ENXIO;
}
mesh_path_fix_nexthop(mpath, sta);
rcu_read_unlock();
return 0;
}
static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
u8 *dst)
{
if (dst)
return mesh_path_del(dst, dev);
mesh_path_flush(dev);
return 0;
}
static int ieee80211_change_mpath(struct wiphy *wiphy,
struct net_device *dev,
u8 *dst, u8 *next_hop)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct mesh_path *mpath;
struct sta_info *sta;
if (!netif_running(dev))
return -ENETDOWN;
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
return -ENOTSUPP;
rcu_read_lock();
sta = sta_info_get(local, next_hop);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
mpath = mesh_path_lookup(dst, dev);
if (!mpath) {
rcu_read_unlock();
return -ENOENT;
}
mesh_path_fix_nexthop(mpath, sta);
rcu_read_unlock();
return 0;
}
static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
struct mpath_info *pinfo)
{
if (mpath->next_hop)
memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN);
else
memset(next_hop, 0, ETH_ALEN);
pinfo->filled = MPATH_INFO_FRAME_QLEN |
MPATH_INFO_DSN |
MPATH_INFO_METRIC |
MPATH_INFO_EXPTIME |
MPATH_INFO_DISCOVERY_TIMEOUT |
MPATH_INFO_DISCOVERY_RETRIES |
MPATH_INFO_FLAGS;
pinfo->frame_qlen = mpath->frame_queue.qlen;
pinfo->dsn = mpath->dsn;
pinfo->metric = mpath->metric;
if (time_before(jiffies, mpath->exp_time))
pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
pinfo->discovery_timeout =
jiffies_to_msecs(mpath->discovery_timeout);
pinfo->discovery_retries = mpath->discovery_retries;
pinfo->flags = 0;
if (mpath->flags & MESH_PATH_ACTIVE)
pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
if (mpath->flags & MESH_PATH_RESOLVING)
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
if (mpath->flags & MESH_PATH_DSN_VALID)
pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
if (mpath->flags & MESH_PATH_FIXED)
pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
if (mpath->flags & MESH_PATH_RESOLVING)
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
pinfo->flags = mpath->flags;
}
static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct mesh_path *mpath;
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
return -ENOTSUPP;
rcu_read_lock();
mpath = mesh_path_lookup(dst, dev);
if (!mpath) {
rcu_read_unlock();
return -ENOENT;
}
memcpy(dst, mpath->dst, ETH_ALEN);
mpath_set_pinfo(mpath, next_hop, pinfo);
rcu_read_unlock();
return 0;
}
static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *dst, u8 *next_hop,
struct mpath_info *pinfo)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct mesh_path *mpath;
if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
return -ENOTSUPP;
rcu_read_lock();
mpath = mesh_path_lookup_by_idx(idx, dev);
if (!mpath) {
rcu_read_unlock();
return -ENOENT;
}
memcpy(dst, mpath->dst, ETH_ALEN);
mpath_set_pinfo(mpath, next_hop, pinfo);
rcu_read_unlock();
return 0;
}
#endif
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
.change_virtual_intf = ieee80211_change_iface,
.add_key = ieee80211_add_key,
.del_key = ieee80211_del_key,
.get_key = ieee80211_get_key,
.set_default_key = ieee80211_config_default_key,
.add_beacon = ieee80211_add_beacon,
.set_beacon = ieee80211_set_beacon,
.del_beacon = ieee80211_del_beacon,
.add_station = ieee80211_add_station,
.del_station = ieee80211_del_station,
.change_station = ieee80211_change_station,
.get_station = ieee80211_get_station,
.dump_station = ieee80211_dump_station,
#ifdef CONFIG_MAC80211_MESH
.add_mpath = ieee80211_add_mpath,
.del_mpath = ieee80211_del_mpath,
.change_mpath = ieee80211_change_mpath,
.get_mpath = ieee80211_get_mpath,
.dump_mpath = ieee80211_dump_mpath,
#endif
};